Wrench



1.1. DONAHUE.

WRENCH.

APPLICATION FILED JAN. 15, I919. 1,332,436. Patented Mar. 2, 1920.

2 SHEETS-SHEET I.

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L1. DONAHUE.

WRENCH.

APPLICATION FILED JAN. 15, 1919.

Patented Mar. 2, 1920.

2 SHEETS-SHEET 2 JOHN J. DONAl-I'UE, OF CENTERVILLE, MASSACHUSETTS.

Wanner-I.

Specification of Letters Patent.

Patented Mar. 2, 1920.

Application filed January 15, 1919. Serial No. 271,185.

To all whom it may concern:

Be it known that I, J OHN J. DONAHUE, a citizen of the United States, and a resident of Centerville, in the county of Barnstable and State of Massachusetts, have invented certain new' and useful Improvements in Wrenches, of which the following is a specification.

My invention relates to improvements in wrenches and while in its broader aspects it is useful in wrenches of many kinds; it is especially applicable to pipe wrenches. The main object of the invention is to provide a wrench which is not only simple and efficient in construction and operation but one which also is provided with a handle adjustable with respect to the wrench jaws in an improved manner. Further and more specific objects, features and advantages will more clearly appear from the detailed description given below taken in connection with the accompanying drawings which form a part of this specification.

In the drawings, Figure 1 is a side view of a wrench embodying my improvements in a preferred form thereof; Fig. 2 is an edge View of one of the wrench jaws; Fig. 3 is a side view of the same jaw; Fig. 4c is an edge view of the handle member; Fig. 5 is a side view of the same, and Fig. 6 is a side view of the wrench showing the handle member in different adjusted positions.

Referring to the various figures, 7 represents a pipe wrench jaw member having a mutilated threaded shank 8 extending at right angles to the jaw 7 and carrying adjustably thereon a jaw frame 9 suitably apertured to receive the thumb nut 10 cooperating with the mutilated threads on the shank 8 in a manner well understood by those skilled in the art. Pivotally mounted in and carried by the jaw frame 9 by means of pivot pin at 11 is a second jaw 12 provided with pipe jaw teeth 13 and an aperture at 1 1 for engagement with the pivot pin 7 11. A leaf spring 15 tends to swing the 'jaw teeth 13 away from the cotiperating teeth on the jaw 7. The jaw frame 9 is provided with a pivot pin aperture at 16 and the jaw 12 is provided with two elongated apertures 17 and 18 the purpose of which will more clearly appear hereinafter.

19 represents a handle member having a forked end comprising two side members 20 and 21 bolted thereto at ,22 and. 23. The

forked members of the handle are provided with opposltely disposed apertures 24, 25

and 26. In one position the forked end of' the handle is made to embrace the jaw 12 and jaw frame 9 as shown in full lines in Fig. l and a pivot pin 27 passed through the alined apertures 16 and 26 and secured in place by a cotter pin 28, and a pin 29 is passed through the alined apertures 18 and 25 and secured in place by a cotter pin 30. Upon throwing the handle in the direction indicated by the arrow in Fig. 1 the handle swings about the pin 27 as a fulcrum pivot, and exerts a lever action on the second jaw 12 by reason of the pin 29 engaging the face of aperture 18 in the jaw 12, causing thejaw 12 to be swung about its pivot 11 againstthe action of spring 15 so that the jaw teeth 13 tend to approach the teeth of jaw 7 and increase the grip of the wrench on the pipe or other article. A continued swing of the handle causes both jaws to be turned thereby turning the pipe or other article in a manner well understood by those skilled in the art. 1

By alining the apertures 24 with the aperture 18 and passing the pin 29 therethrough, the handle will assume the adjusted position with respect to the jaws, as shown by the dot and dash lines in Fig. 1, and by alining the apertures 24 with the aperture 17 and passing the pin 29 therethrou h, the handle will assume the adjusted position with respect to the jaws as shown by the short dash lines in Fig. 1. By alining the apertures 24 with the aperture 16 in the jaw frame 9, and passing the pin 27 therethrough, and alining the apertures 25 with the aperture 17 and passing" the pin 29 therethrough the handle will assume the adjusted position with respect to the jaws as shown, by the dot and dash lines in Fig. 6. By reversing the handle with respect to the jaws and frame 9, and alinino; the apertures 26 with the aperture 16 in the aw frame and passing the pin 27 therethrough and alining the apertures 2 1 with the aperture 18 and passing the pin 29 therethrough the handle will assume the adjusted position with respect to the jaws as shown in full lines in Fig. 6, and by alining the apertures 24 with the aperture 16 in the frame 9 and passing the pin 27 therethrough. and alining the apertures 26 with the aperture 17 and passing the pin 29therethrough, the handle will assume. the

adjusted position with respect to the jaws as shown in short dash lines in Fig. 6.

It will also be seen that other combinations may be made whereby other adjustments of the handle may be made with respect to the jaw members, but in all cases it will be seen that the handle will be pivotally fulcrumed on the jaw frame 9 and will exert a lever action on the jaw 12 tending to swing it about its pivot 11 to move it toward the jaw 7.

Although I have described my improvements in great detail and with respect to a preferred embodiment thereof, I do not desire to be limited to such details or embodiments, since many changes and modifications may be made and the invention embodied in widely differing forms without departing from the spirit and scope of the invention in its broader aspects.

What I claim as new and desire to secure by Letters Patent, is;

1. In a wrench the combination of a jaw, a jaw frame adjustably carried with respect to said jaw, a second aw pivoted on said jaw frame to swing with respect thereto toward and away from the first mentioned jaw, and a handle member having a lever action on said second jaw tending to increase the grip of the wrench with a fulcrum on said jaw frame and means whereby saidhandle member may be adjusted to various positions with respect to said jaws and still exert said lever action.

2. In a wrench the combination of a jaw, a jaw frame adjustably carried with respect to said jaw, a second'jaw carried by said jaw frame and movable with respect thereto toward and away from the first mentioned jaw, a handle member having a lever action on said second jaw tending to increase the grip of the wrench with a fulcrum on said jaw frame, said handle member having three apertures adapted to cooperate with apertures in the jaw frame and second jaw, and two pins adapted to cooperate with selected apertures, whereby said handle member may be adjusted to variouspositions with respect to said jaw and still exert said lever action.

3. In a wrench the combination of a jaw, a jaw frame with a second jaw carried thereby a handle member having three apertures adapted to cooperate with apertures in the second jaw and frame, and pins adapted to cooperate with selected apertures to secure the handle member to the second jaw and frame, whereby said handle member may be adjusted to various positions with respect to said jaws.

4. In a wrench the combination of two cooperating jaw structures, and a handle member, one of the jaw :structures having three apertures, and saidhandle member having three cooperating apertures, and two pins adapted to cooperate with selected apertures to secure the handle member to the jaw structures in Various posltions.

5. In a wrench the combination of a jaw, a jaw frame adjustably carried with respect to said jaw, a second jaw carried by said jaw frame and movable with respect thereto toward and away from the first mentioned jaw, a handle member having a lever action on said second jaw tending to increase the grip of the wrench with a fulcrum on said jaw frame, said jaw frame having a pivot aperture and said second jaw having two apertures and said ha dle member having three apertures, and two pins adapted to cooperate one with an aperture in the handle member and with the aperture in the jaw frame to form a fulcrum pivot, and the other pin with one of the other apertures in the handle member and one of the apertures in the second jaw whereby said handle member may be adjusted to various positions with respect to said jaws and still exert said lever action.

6. In a wrench the combinationof a jaw, a jaw frame adjustably carried with respect to said jaw, a second jaw pivotally mounted with respect to said jaw frame whereby it is movable toward and away from the first mentioned jaw, a spring tending to move it away from said first mentioned jaw, a handle member pivotally secured to the jaw frame and having a connection with the second jaw to exert a lever action thereon to force the second jaw toward the first jaw and relatively to said frame, and means whereby said handle member may be adjusted to more than two positions with respect to said jaws and still exert said lever action.

7. In a wrench the combination of a jaw, a jaw frame adjustably carried with respect to said jaw, a second jaw pivotally mounted with respect to said jaw frame whereby it is movable toward and away from the first mentioned jaw, a spring tending to move it away from said first mentioned j aw, a handle member pivotally secured to the jaw frame, said jaw frame having a pivot aperture and said second jaw having two apertures and said handle member having three apertures, and two pins adapted to cooperate one with one aperture in the handle member and with the aperture in the jaw frame to form a fulcrum pivot, and the other pin with one of the other apertures in the handle member and one of the to toward and away from the first mentioned jaw, a handle member having a lever action on said second jaw tending to increase the grip of the wrench with a fulcrum on said jaw frame, said frame and second jaw having a plurality of apertures, and said handle member having a plurality of apertures, and pins adapted to be inserted in selected alined apertures in the handle member and frame and handle member and second jaw, whereby said handle member may be adjusted to various positions with respect to said jaws.

Signed at town of Barnstable in the county of Barnstable, and State of Massachusetts this tenth day of J any. A. D. 1919.

JOHN J. DONAHUE. 

